Excavator and loader.



H. F. DOLANI nxcavA'ron AND LOADEB, APPLIOATIOH FILED APB.30. 1912. v

Patented June 10, 1913.

Genus-51mm 1.

wane/wen H. F. DOLAN. EXGAVATOR AND LOADBR.

ABILIGATIOH FILED APIL30, 1912, I Patented June 10, 1913.-

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H. F. DOLAN. EXGAVATOR AND LOADER'.

APPLIUATION FILED Arman, 1912.

Patented June 10,1913.

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H. F. DOLAN.

EXOAVATOR AND LOADBR. APPLICATION FILED APR. 30, 1912';

' l tenfied Jun 191 3.

. awwwtoz (liter/"e1 I H. F. DOLAN. EXGAVATOR AND LOADER.

APPLICATION FILED APR. 30, 1912.

Patelited June o, 1913.

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To all whom it may concern:

UNITED- EXCAVATOR AND LOADER.

I Specification of Letters Patent.

Application filed April 30, 1912. Serial No. 694,245. b

Be it known that I, HUGH F. DOLAN, a citizen of the United States, residing at Pottsville. in the county of Schuylkill and State of Pennsylvania, have invented certain new and useful Improvements in EX- cavators and Loaders, of which the follow ing-is a Specification.

The present invention relates to exca-' vators and loaders, and consists in'the combinations and arrangements of elements hereinafter disclosed and set forth in the accompanying claims.

The invention has for its purpose to pro vide an excavator and loading machine which will be positive 'and accurate in operation, one which will readily respond -through a convenient system of control, and

one wherein the construction will ably withstand heavy andrough usage.

lVith these and other objects in view, the invention consists in the arrangement and combination of parts hereinafter claimed and, while the invention is not restricted to the exact details shown and described, still, for the purpose of disclosure, reference is had to the accompanying drawings, in which like reference characters designatethe same parts in the several views, and in which,

Figure 1 is a side elevational view of the machine complete; Fig. 2 is an enlarged side elevational view, partly in section, and disclosing the excavator and loader per se; Fig. '3 is a top plan view of Fig. 2; Fig. i is a front elevational view of the machine with parts in section, ness'; Fig. 5 is a detail perspective view of the shovel; and Fig. 6 is a detail perspective view of one end of the shovel supportingarm.

Referring to the construction in further detail, the same consists of an ordinary flat car A adapted to be secured to the rails B in any appropriate manner for stabilizing- .the machlne.

At-one end, the car A has suitably mounted thereon a vertically disposed frame (see Fig. 4:) comprising uprights 1 connected by cross heads 2 and '3 and which, with the car platform, suitably supports an arm adapted to have lateral and vertical movement and on the free end of which is carried the shovel. The connectionzbetweensaid arm and its supporting elements consists of a vertically disposed yoke thaving. pivot-bearings 5 and 6 journaled respectively in the cross head 3 and and parts omitted for clearear platform, as clearly illustrated in Fig. 2;

The arm. designated by the character 7, is 1ournaled at its end 8 on thepivotQ be tween the sides of the yoke 4 (See Fig-Y and said arm is adapted to be swung later ally with the yoke at through the medium of Patented June 10,1913.

STATES PATENT OFFICE.

a suitable mechanism shown herein as-con sisting of a drum 10 having wound thereon a cable 11 that cooperates with the grooved pulley 12 carried by the member 5 of the yoke 4, and passing over a pair of grooved pulleys 'or'sheaves 13 andl i 'jeurnaled respectively on the uprights 1" of the vertical frame, as illustrated in Fig. 4. The vertical or lifting and lowering movement of the shovel carrying arm is efi ectedthrougha similar mechanism comprising a drum v18 having a cable 19 that connects with the A outer end of said arm through h mediumof a link 20 and yoke frame ZR-{The cablejlfi passes over a grooved'pulleyf22 and iietween guide pulleys or sheaves 23 that are mount-x ed respectively on suitable journal bearings 24 and 25 located within the cut-away portion 26 of the cross head 2 i The shovel 27 (see Fig. 5) is pivotally mounted at 28 on'a head 29'that is secured to the outer end of a slidable section .or carriage 30 that has reciprocating movement on the arm 7 and for which purpose said arm has flanges 31' (see Fig.4 engaging within grooves or guideways 32 with which the carriage 30 is provided.

The "carriage 30 is reciprocated on the arm 7 through the medium of a piston 31 which operates within the cylinder 32 that issuitably secured within the arm 7. The piston 31 is connected to the carriage 30 through the medium of the piston rod 33, and said rod is shown as being square in cross section to operate within bearings 34 and 35, of similar cross sectional design, on the cylinder head and arm 7 respectively, wherebysaid rod 33 is prevented from havingangw' lar movement for holding the shovel against lateral tilting. The fiuidpressure for operating the piston 31 within the cylinder'32 is supplied from a' suitable source through the pipe 36 leading toa four way valve .37 thatcommunicates with either end of said cyli'n der by pipes 88 and- 39.' 'An appropriate valve actuating means 40 is located ad janentthe yoke frame 4 within convenient reach of;

the operator. The mechanism just described serves for driving the sho el within t e embankment I messes or material t-o'be excavated, and it will be readily u-ppreciatedj1tha-t, by reason of the direct drive which is obtainable, said shovel will receive the mechanism drivingpower and that, furthermore, the head 29 offers an abutment or reinforcing element for said shovel and thus relieves the same of undue strain.

' The mechanisnnfor tilting the shovel on its pivot 28 consists of a cylinder 41 that is secured to the'carriage 30 and located at. the inner end thereof. A piston 42, operable in the cylinder 41, has its rod 43 connected with u cross heed st that is slidably mount- ,1 ed on suitable guideivays i5, likewise carried by said carrin e 30. The cross head 44 is connected by a link 46 with an upwerdly disposed and curved arm 47 that is secured to the back 48 of the shovel, as clearly shown in Fig. 5. The operating fluid for the piston 42, within the cylinder 41, is admitted thereto through a four-way valve 49 which communicates with the suppy pipe to and pipes 51 entering the cylin er. A suit-stile valve-actuating mechanism 52 is 10- csted in convenient reach of the operator, and adjacent the valve-control 40 of the cylinder 32.

The shovel consists of a bottom section 58 heving the usual teeth 54 providing the cutting edge and side sections 55 united by the heel: section 4-8. A door 56 is swingingly mounted within the back section es on a suitable bar and sleeve bearing 57 end 58 respectively. A suitable door control 59 is provided, and has a latch 60 adapted to have releasing engagement with a stud carried by the door. A lanyard or releasing cord 71 is rovided for effecting the actuation of the etch 60, as will be understood.

The 0 .ration oi: the excavator and loader is as f0 lows: The arm Z is lowered to the desired position through the medium of the drum 1 and cable 19, and steam or air is admitted behind the piston 31 Whiich, through the medium of the piston rod 33, advances the carriage 30 forward and the shovel 27 into the embankment or material to be excavated. This operation of the shovel into the material entirely or partiallyfills it, such filling being facilitated by the teeth 54 which are constructed in the manner best suited for o crating on the material to be handled. hen the shovel is filled, air or steam is then admitted into the piston rod side of the tiylinder 41 which, by means of the piston r 43 and link 46 tilts the shovel to'an upright position'relatively to the head 29, as in the manner indic'atedin Fig. 1. The hoisting drum 18 thenraises the arm 7 to e'position hi h-enough to clear the top bit the "car or ot ier receptacle in which the contents of theshovel is to be emptied.

. "rite-arm is then swung laterally three 11 the-drowned cable it) and 11 to the point for releasing the load when, through the lanyard 71, the latch 60 is released and the door 56 opened under the weight of the contents of the shovel. The shovel may then be moved to its normal position, as shown in full lines in Fig. 1, and the arm 7 swung laterally and lowered, as desired.

With the construction described and dis closed herein it will be apparentthat the excavator may be conveniently operatedet, any desired angle and that. the successive digging end carrying" operations of the shovel may be effected with great to idity.

It is obvious that those skilled in t 1e srt may vary the details of construction and arrangement of parts without departing from the spirit of my invention, and there fore i do not wish to be limited to such features except as may be required by the claims.

Having thus described my invention, what I claim as new and desire to protect by U. 55. Letters Patent, is:

1. in an excavator and loader, the combination of a support; an arm mounted to have movement on said support; means for actuating the arm; a cylinder mountet on the arm; at piston operable in said cylinder; a shovel carried by the piston; a second cylinder carried by the piston of the firstnamcdcylinder; a piston operable in said second cylinder; means connecting seid second piston with the shovel to actuate the latter; and means for emptying the contents of the shovel, substnntialiy as described.

2. in an excavator and tender, the combinetion of a support; an erm mounted to have movement on said support; menus for moving said arm; acylinder mounted on the arm, a piston operable in said cylinder; a carrisge connected to move with said piston; a shovel carried by said carriage; s. second cylinder carried by the carriage; n piston operable in said second cylinder; means connectinn; said second piston with the shovei to actuate the latter; and means for emptying the contents of the shovel, snbstantisily as described.

3. In an excavator and loader, the coinbinatlon of a support; an arm mounted to have movement on said support; means for moving said arm; a cylimer mounted on said arm; a piston o erable in said cylinder; a carriage connects. to be actuated by said piston; a shovel ivotally mounted on said carriage; a second cylinder mounted on the carriage; a piston operable in said second cylinder; a piston rod and link connection between. said second pistoii snd the shovel adapted to swing suid shovel on its pivot; and means for emptying the contents oi th shovel, substantially es described.

4. In an excavator and louder, the combinution oi? a support; an erm movsbly mounted on said support; means for moving said arm on its support; a cylinder mounted on said arm; a carnage mounted to reciprocarried by the carriage; a cross head mounted to reciprocate on said carriage; a piston operable in said second cylinder; a piston rod connecting said piston and said cross head: a link connecting said cross head with said shovel to turn the latter on its pivot; and means for emptying the contents of the shovel, substantially as described.

5. In an excavator and loader, the combination of a support; an arm movably mounted on said support; means for moving said arm; a cylinder mounted within said arm; a carriage mounted to reciprocate on said frame above said cylinder; a piston operable in said cylinder; a piston rod connection between said piston and said carriage, said carriage provided with a head at its outer end; a shovel pivotally mounted on said head and adapted to be reinforced thereby; a second cylinder mounted on and carried by said carriage; a cross head mounted to reciprocate on said carriage; {piston operable in said second cylinder; apistpm rod connection between said piston and said cross head; a link connection between said cross head and. said shovel adapted to actuate the latter on its pivot; and means for emptying the contents of the shovel, substantially as described.

- 6. The combination with a rigid support;

of an excavator shovel pivotally mounted on said support; a door swingingly mounted Within the Wall at said shovel immediately adjacent said support; and means for securing and. releasing said door substantially as described.

7. The combination with rigid supporting members having a head; of an excavator shovel pivotally mounted on said head; a door sivingingly mounted within one Wall of the shovel and disposed against and adapted to be reinforced by said head and means for securing and releasing said door, substantially as described.

In testimony whereof I afiix my signature in presence of two Witnesses.

HUGH F. DOLAN.

Witnesses WM. H. Em, PATK. Fox. 

